/**
 * Copyright (c) 2023 murenchao
 * taomu is licensed under Mulan PubL v2.
 * You can use this software according to the terms and conditions of the Mulan PubL v2.
 * You may obtain a copy of Mulan PubL v2 at:
 *       http://license.coscl.org.cn/MulanPubL-2.0
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 * See the Mulan PubL v2 for more details.
 */
package cool.taomu.mqtt.broker.factory

import cool.taomu.mqtt.broker.entity.MessageEntity
import cool.taomu.mqtt.broker.utils.MqttUtils
import cool.taomu.mqtt.broker.utils.impl.DataStorage
import cool.taomu.utils.inter.IStorage
import io.netty.channel.ChannelHandlerContext
import io.netty.handler.codec.mqtt.MqttFixedHeader
import io.netty.handler.codec.mqtt.MqttMessage
import io.netty.handler.codec.mqtt.MqttMessageIdVariableHeader
import io.netty.handler.codec.mqtt.MqttMessageType
import io.netty.handler.codec.mqtt.MqttQoS
import java.util.HashSet
import org.slf4j.LoggerFactory

class PubCompRequest implements IProcess {
	val static LOG = LoggerFactory.getLogger(PubCompRequest);
	
	IStorage cache = new DataStorage();
	
	override request(ChannelHandlerContext ctx, MqttMessage mqttMessage) {
		var clientId = MqttUtils.getClientId(ctx.channel);
		LOG.info("执行了MQTT PubComp 命令 : " + clientId);
		var msgId = MqttUtils.getMessageId(mqttMessage);
		// 增加一个给发布者发一个Pubcomp命令，和删除消息的方法根据clientId
		//TODO 有bug
		var qos2 = cache.get("mqtt-qos2-message",#[clientId,msgId].join("#")) as HashSet<?>;
		for (q : qos2) {
			var msg = q as MessageEntity;
			var header = new MqttFixedHeader(MqttMessageType.PUBCOMP, false, MqttQoS.AT_MOST_ONCE, false, 0);
			msg.senderChannel.writeAndFlush(new MqttMessage(header, MqttMessageIdVariableHeader.from(msgId)));
			qos2.remove(msg);
			cache.put("mqtt-qos2-message",#[clientId,msgId].join("#"),qos2);
		}
	}
}